摘要:
A hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft in an internal combustion engine. The device has a rotor, with blades arranged around its periphery. A stator is connected in a rotationally secure manner to a drive wheel. The rotor and the stator together form pressure chambers, which can be filled with hydraulic fluid via a hydraulic fluid system, in which there is disposed a volume accumulator.
摘要:
A hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft in an internal combustion engine. The device has a rotor, with blades arranged around its periphery. A stator is connected in a rotationally secure manner to a drive wheel. The rotor and the stator together form pressure chambers, which can be filled with hydraulic fluid via a hydraulic fluid system, in which there is disposed a volume accumulator.
摘要:
A device (11) for variably adjusting the control times of gas exchange vales (9, 10) of an internal combustion engine (1) having a hydraulic phase adjustment device (12) and at least one volume accumulator (31), wherein the phase adjustment device (12) can be brought into driving connection with a crankshaft (2) and a camshaft (6, 7) and at least one early adjustment chamber (24) and at least one late adjustment chamber (25) which can be supplied with pressure medium via pressure medium lines (26a, b, p. v), or from which pressure medium can be drained. A phase position of the camshaft (6, 7) can be adjusted relative to the crankshaft (2) in the direction of early control times by supplying pressure medium to the early adjustment chamber (24) while simultaneously draining pressure medium from the late adjustment chamber (25), wherein a phase position of the camshaft (6, 7) can be adjusted relative to the crankshaft (2) in the direction of late control times by supplying pressure medium to the late adjustment chamber (25) while simultaneously draining pressure medium from the early adjustment chamber (24), wherein pressure medium can be supplied to the volume accumulator(s) (31) during operation of the internal combustion engine (1).
摘要:
A device (1) for the hydraulic adjustment of the angle of rotation of a camshaft (3) in relation to a crankshaft of an internal combustion engine, situated at the drive-side end (2) of the camshaft (3) and formed of a drive unit (4) that stands in a driven connection with the crankshaft and an output unit (5) that is connected in rotationally fixed fashion with the camshaft (3) is provided. The drive unit (4) stands in a force-transmitting connection with the output unit (5) via at least two pressure chambers (6, 7) formed inside the device (1), the supply of pressure medium to the pressure chambers (6, 7) taking place via a separate distributor housing (8) that has a connecting flange (10) suitable for transmitting pressure medium to the device (1) and a control valve receptacle (9) that is connected to the connecting flange (10) via two pressure medium conduits (11, 12). The output unit (5) is fastened non-positively to the camshaft (3), which passes through the device axially with its drive-side end (2) and has a hollow construction, the end segment (13) of the camshaft (3) being enclosed by the connecting flange (10) of the distributor housing (8) and having a plurality of radial bores (17, 18) that stand in pressure medium connection with additional radial bores (19, 20) in the camshaft (3) via a distributor insert (22) that can be placed into the hollow space (21) of the camshaft (3).
摘要:
A device for changing the control times of an internal combustion engine (camshaft adjuster) having a pressure medium distributor arranged within a camshaft is provided. The pressure medium distributor is provided at its front end with a radially extending shoulder, this shoulder forming part of the camshaft axial mounting.
摘要:
A valve timing control apparatus of an internal combustion engine includes an output element having a central bore and in mesh with an adjusting member which reciprocates between two axially spaced end positions, thereby defining two pressure compartments which are fluidly sealed from one another. An oil guide bush is received in the central bore of the output element and projects in a bore of the camshaft or the component securely fixed thereto. A first fluid passageway is formed between an outer surface area of the guide bush and an inner surface area of the driven element for conducting hydraulic medium to one of the pressure compartments, and a second passageway is formed interiorly of the guide bush for conducting hydraulic medium to the other one of the pressure compartments. The guide bush is securely fixed to a screw fastener and so configured as to allow a connection from the interior of the guide bush to the other one of the pressure compartments. By separating the unit of guide bush and screw fastener from the valve timing control apparatus, the driven element of the valve timing control apparatus now possesses only a very small axially projecting length so that no additional structural space is required between the outer and the first end wall of the cylinder head. Only after installing the apparatus together with other components of the control mechanism vertically in the form of a cartridge is the screw fastener with attached oil guide bush inserted for securement of the apparatus to the camshaft.
摘要:
A device for changing the control times of an internal combustion engine (camshaft adjuster (1)) having a pressure medium distributor (21) arranged within a camshaft (11) is provided. The pressure medium distributor (21) is provided at its front end with a radially extending shoulder (42), this shoulder (42) forming part of the camshaft axial mounting.
摘要:
The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections. In an intermediate adjusted position of the valve control piston (8), for setting an intermediate phase angle, a lower hydraulic resistance W prevails between the delivery connection P and that one of the working connections A and B at which a design-related, higher fluid leakage V occurs.
摘要:
The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections. In an intermediate adjusted position of the valve control piston (8), for setting an intermediate phase angle, a lower hydraulic resistance W prevails between the delivery connection P and that one of the working connections A and B at which a design-related, higher fluid leakage V occurs.
摘要:
The invention relates to a hydraulic camshaft adjusting device (1) of a rotary piston type that is disposed on a camshaft (3) mounted in the cylinder head (2) of an internal combustion engine and comprises a drive pinion (4) that is in driving relation with a crankshaft through a gearing (6), and a winged wheel (5) that is fixedly mounted on the camshaft (3). The drive pinion (4) is made up of a circumferential wall (7), a camshaft-distal side wall (8) and a camshaft-proximate side wall (9), which walls (7, 8, 9) together define a hollow space (10) in which at least one hydraulic working chamber is formed by at least two limiting walls (11). The winged wheel (5) comprises at least one wing (14), and each wing (14) divides a hydraulic working chamber into two hydraulic pressure chambers. In accordance with the invention, the camshaft-proximate side wall (9) of the drive pinion (4) is configured as a weight- and design space-saving thin-walled component which is shaped out of a circular blank and comprises a bent edge region (17) that is bent at a right angle and partially surrounds the circumferential wall (7) of the drive pinion (4), said camshaft-proximate side wall (9) being undetachably fixed to the drive pinion (4) by a separate connection (18).